Boiler cleaner



1,663,273 l. L. KEMP BOILER CLEANER March 20, 1928.

Filed July 21. 1927 oooo f oooooooooo fm1/mr: wnly /femjz k the bottom thereof a onse-way stepby-ste Patented Mar. 2K0, 1928.

ravine L. KEMP, orMrnToN, MASSACHUSETTS, ASSIGNCR To OSCAR nUsSA, or

c WATERTOWN, MASSACHUSETTS.

BCILE'R CLEANER.

Appucation med Jjuiy 21,

The object of this invention is to provide a horizontal steam boiler with a bottom cleaner manually operable at one end of the boiler and adapted to impart to sediment on movement to the usual Sediment or blow-o outlet, without moving any ofthe sediment away from the outlet. y l

-Of the accompanying vdrawings forming a part of this specilication,-

Figure 1 is a longitudinal section of a boiler provided with a b'ottoi'n cleaner, in accordance with the invention.

Figure 2 is a section on line4 2-2 of Fig# ure 1. A f

Figure 3 is a fragmentary en'dvvi'ew, showing the cleaner in its inoperative position.

Figure 4 is a -view .similar to FigureV 3, showing the cleaner in its operative position;

Figure 5 is a section on linee-5y ofFigure 3. Figure 6 is an enlargement cfa-portion of Figure 2.

Figure 7 is a plan View of the parts shown by Figure 6. I

Figure 8 shows lseparately the links shown by Figures 6 and 7 n Figure 9 shows separately the scraper shown by Figure 7. Y'

Figure 10 is a view similar'to Figure '6, showing a modiiied form of scraper.

The Same reference characters indica-te the Same parts in all of the figures. 'i

In the drawings, 12 designates a combined bearing andl guide fixed to the tube jsheet 13 and lhead 14e4 of a horizontal tubular boiler 10, and communicating with the lwater space thereof, Said guide extending longitudinally of the boiler at one Side. of the longitudinalA center of the bottom portion thereof, 15 designates a cylindrical rod which is mo`vable endwise by a handle 17 fixed to its outer end, and is adapted to turnin the bearing 12, said bearing being provided with packing means indicated at 16, to preventle'ak age of water around the rod. The rod is located by the guide at one side of the longitudinal center of the bottom portion of theV boiler. The rod 15 is adapted to be reciprocated in the gui-de, and its length is such that when itis moved outward, as shown by full lines in Figure 1, its inner end is spaced about two feet from the inner head or tube Sheet 18 of the boiler, so that the rod and the Scrapers 19 hereinafter described, carried 1927. serial No. 207,528.

kThe Scrapers `19 are so connected with the rod 15, that when the rod is turned in the vbearing 12, the Scrapers 'are swung 'either upward from lthe bottom ofthe boiler, as

Vshown by Figure 3, or downward to bearon the bottom of the boiler, 'as Shown by Figl ure's 1, 4 and 6. When the Sora 'ersbear on the boiler bottom in the starting position shown by full lines in Figure l, and the rod is moved in the direction of arrowiathe Scrapers force sediment toward the outlet'20,

'movement oflany part ofthe sediment away from the. out-let. The connection of the Scrapers to the rod is preferably such that the Scrapers, when moving in Contact with the boiler bottom, are' adapted Vto Slightly rise and kfall independently, so that theymay pass over the inner heads of the rivets 22,

connecting the plates sections of the boiler,` the preferred connection `being as neXt described.

1 fix to the rod 15, by pins 24, or other,- wise,the inner ends yof arms 23, one for leach scraper. The sorapers19 are formed Aindependently, and theirinner ends are loosely connected with the arms 23, by links 2.5, mounted to turn looselyon the rod 1,5, and having slots 26,`through which studs 27 pass loos-ely, said Studs passing through orifices 28 in the inner en'ds of the Scrapers. Links 29 are pi'voted to the outer ends of the "arms 23, by studs 30, and are loosely connected with the outer ends of the Scrapers by studs 31, passing loosely through slots 32 in the links 29, and through orifices 33 in the outer ends of the Scrapers.

The described connection permits the raising and lowering of the scrapers by turning movements of the rod, and a sutlicient independent edgewise movement of the scrapers to enable them to pass over rivet heads.

To support the Scrapers raised above t-he boiler bottom when they are not in use, I provide the boiler and the rod with complemental detent members, whereby the rod may be releasably confined in position to hold the scraper-s raised, vsaid members in this instance, including an ear 35, fixed to the boiler head 14, and provided with anV orifice 36, and a stud 37, fixed to the rod handle 17, and adapted to enter the orifice, as best shown by Figure The arrangement is such that when the stud enters the orifice, the scrapers are held raised, as indicated by Figure 3, and when the stud is removed from the orifice, the scrapers are permitted to bear on the boiler bottom, as indicated by Figure 4. f Y

To facilitate the movement of sediment through the outlet 20, I connect Awith said outlet a vacuum chamber 39, from which air may be exhausted by any suitable means, the chamber being provided with an inlet 40, detachably connected at 41 with a branch of the outlet 20. Shut-off valves 42 and 43 are provided in the outlet 2O at opposite sides of said branch. Then the boiler is to be cleaned, the valvef43 is closed, the valve 42 is opened, and vacuum is created in the tank 39, and maintained during the cleaning operation. The removed sediment is drawn by suction into the tank, which may be removed and emptied after the operation.

Each scraper may be a short length 45 o-f chain attached atv its ends to an arm 23 and depending therefroml in the form of a festoon which bears on thc bottom of the boiler asV shown by 10 when the arm 23 is lowered and is raised from the bottom when the arm is swung upward.

The rod 15 and the arms Q3 constitute a scraper carrier, and the arms 25 and Q9 and .studs 27 and 30, constitute a suitable embodiment lof means connecting the scrapers 19 with the carrier.

When each scraper is a chain 45, as shown by Figure 10, the arms E25 and 2S) may be omitted, and the terminal links of the chain constitute the means for connecting` the scraper with the carrier.l

I claim: l

1. A steam boiler having a longitudinally extending guide at its forward end communicating with the water vspace of the boiler, and a. bottom cleaner comprising a rod longitudinally movable and adapted to turn in said guide, a plurality of arms iXed to the rod and projecting laterally therefrom, a plurality of Scrapers, and links loosely connecting the IScrapers with the rod and arms, and permit-ting independent edgewise movements of the scrapers.

2. A steam boiler having a longitudinally extending guide at its forward end communicating With the water space of the boiler, and a bottom cleaner comprising a rod longitudinally movable and adapted to turn in said guide, and a plurality of bot tom Scrapers connected with and projecting laterally from the rod, the Scrapers bearing normally on the bottom of the boiler and being movable Isidewise by an endwise movement of the rod to` scrape the bottoni, and edgewise from and toward the bottom by turning movements of the rod, so that the cleaner is operable to impart a step-by-step one-way movement to sediment on the boiler bottom, the boiler being provided. `with a suction chamber connected with the sediment outlet Aand adapted to facilitate the one-way movement of the sediment.

3. A steam boiler having a longitudinally extending ,guide at its forward endcommunicating with the water space, and located at one side of the longitudinal center of the bottom portion of the boiler, adjacent said bottom portion, and a bottom cleaner comprising a scraper carrier, composed of a rod longitudinally movable and adapted to turn in said guide,and located thereby above said bottom portion, at said onev side of the longitudinal center thereof, and a plurality of arms fixed to the rod and eX- tending therefrom across the longitudinal center of the bottom portion, the arms being vertically oscillatable edgewise and movable sidewise by the rod, a. plurality of scrapers. and means connecting the Scrapers with the carrier, said connecting means and carrier locating the scrapers so 'that they are spaced apart and extend across the longitmiinal center of the bottom portion, the srrapers conforming from end to end to said bottom portion, the arrangement being such that edgewise and sidewise movements*maybe imparted by the carrier to the scrapcrs to impart a one-way step-by-step movement to sediment on the bottom portion.

4. A steam boiler' as specified by vclaim (l, the means connecting the Scrapers with the carrier being adapted to permit independent edgewise movements of the lscrapers.

In testimony whereof have aiiixcd my signature.- 

